▎ 摘　　要

NOVELTY - Synthesizer comprises cylindrical structure inner chamber, agitator, protective gas inlet (11) and receiving port (12) which is provided on top of synthesizer, and inner chamber, side wall is set with two deceleration blades perpendicular to the side wall. The agitator comprises shaft (13) and two paddles arranged on the shaft which is coaxial with the cylindrical structure of the inner cavity (10). The deceleration blades and the stirring blades are arranged at intervals, and multiple carbon source gas outlets (30) are distributed at the bottom of the cavity of the synthesizer. USE - Synthesizer for preparing graphene. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a synthesizing graphene, which involves: (A) using pure copper as raw material and heating at 1000-1100 degrees C in synthesizer having protective atmosphere forming a copper melt; (B) turning on the stirrer of the synthesizer, flowing molten copper smoothly with stirring of the stirring paddle to generate laminar friction with the molten copper between the deceleration blades with hydrocarbon gas as a carbon source gas; (C) entering carbon source gas into synthesizer from the carbon source gas outlet at the bottom of the synthesizer; (D) forming bubbles in the molten copper and floating, and rubbing laminar flow of the copper melt layers at different flow rates into a gas film; (E) decomposing carbon source gas thermally into carbon atoms at a high temperature and recombined under the catalysis of copper to generate graphene; and (F) floating graphene to the surface of the copper melt, purging with a protective gas flow. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a synthesizer. Inner cavity (10) Protective gas inlet (11) Receiving port (12) Shaft (13) Carbon source gas outlets (30)